Fix up seed description helper

app/helpers/seeds_helper.rb

@@ -9,6 +9,8 @@ module SeedsHelper
   def display_seed_description(seed)
     if seed.description.present?
       truncate(seed.description, length: 130, separator: ' ', omission: '... ') { link_to "Read more", seed_path(seed) }
+    else
+      ''
     end
   end
 end

spec/helpers/seeds_helper_spec.rb

@@ -6,7 +6,7 @@ describe SeedsHelper do
       seed = FactoryBot.create(:seed,
         description: nil)
       result = helper.display_seed_description(seed)
-      expect(result).to eq "no description provided."
+      expect(result).to eq ""
     end
 
     it "is less than 130 characters long" do